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Priced as of May 14, 2026
4.7(30,303 ratings)Buy on AmazonSaved to your guest loadout. Sign up to also save to your Cabinet (consumables) or Kit (tools you own).
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Prices may varyCarCareTruth's Analysis
Last reviewed May 15, 2026
TL;DR UL-listed (provisional — Amazon spec table claim, direct database verification pending); 2000A 12V lithium jump starter community-confirmed reliable for gas vehicles up to V8 — the peak-amp label claim has not been independently bench-tested. Standard Li-ion; community reports 70–75% charge retained at one year; no documented thermal runaway incidents for this model.
What it is and how it performs
The GB70 is a 2000A portable jump starter rated for gasoline engines up to 8.0L and diesel up to 6.0L. The Amazon spec table lists "Specification Met: UL" — UL Product iQ database confirmation was not completed at time of this review, so the certification is treated as provisional. NOCO's UltraSafe technology includes patented spark-proof clamps and reverse-polarity protection, reducing the risk of incorrect connections. The 2000A peak rating has not been independently bench-tested (no Project Farm or equivalent measurement found for the GB70 specifically); community evidence — including a JK-Forum field test on a discharged Jeep JK and 30,000+ Amazon reviews spanning passenger cars, SUVs, and trucks — confirms reliable real-world starting for the claimed vehicle classes under normal conditions. Charge retention stands out: multiple long-term owners report 70–75% charge retained after 12 months in storage without a top-off, consistent with NOCO's one-year claim. The IP65-rated housing with rubber over-molding handles trunk and glovebox storage across temperature extremes.
Who should buy this — and who should skip it
The GB70 is the right choice for owners who want a single jump starter capable of covering everything from a motorcycle to a full-size diesel pickup, stored in the truck bed or trunk for months between uses — the charge retention and IP65 rating make it low-maintenance emergency equipment. Skip it if USB-C Power Delivery fast-charging is a priority (the 10W USB-C port is standard charging, not PD) or if budget is the constraint — the GB40 covers gas engines up to 6.0L at a lower price point. Confirm UL Product iQ database status before purchase if third-party certification is a decision factor.
Safety and environmental impact
The GB70 is an electronics device with no SDS. The Amazon spec table claims UL certification (provisional — not yet confirmed via productiq.ul.com). Standard Li-ion battery; NOCO documents BMS and reverse-polarity protection; no documented thermal runaway incidents for this model as of 2026-05-14; CPSC recall status checked with no active recall found. California Prop 65 warning applies (standard for Li-ion battery products). Battery disposal: Call2Recycle drop-off available at Home Depot, Lowe's, and Staples — standard Li-ion recycling path, no manufacturer pre-paid take-back program documented.
Frequently asked questions
Is the NOCO GB70 UL-listed?▾
The Amazon product listing includes 'Specification Met: UL' in the specifications table, and the unit carries UL branding. A direct UL Product iQ database lookup was not completed at time of scoring — the certification is documented as provisional. If UL listing is later confirmed via productiq.ul.com, the safety certification quality score and health score may improve.
Does the NOCO GB70 have USB-C Power Delivery?▾
No. The GB70 has a USB-C port rated at 10W (standard charging). It does not support USB-C Power Delivery. For Power Delivery fast-charging of laptops and newer phones, the GBX75 or other GB-series units with PD output would be needed.
How long does the GB70 hold a charge in storage?▾
Community long-term verified-purchase reviews report 70–75% charge retained after 12 months of storage with no intervening charge. NOCO's spec claims up to 1 year. A top-off every 3 months is the common recommendation for trunk emergency use; every 6 months is adequate for garage-kept storage. Units stored fully discharged for 6+ months may trigger BMS lockout and fail to accept a charge — this is a storage maintenance issue, not a product defect.
What engines can the NOCO GB70 start?▾
NOCO rates the GB70 for up to 8.0L gasoline and up to 6.0L diesel engines at 12V. Community evidence confirms reliable starting for 4-cylinder, 6-cylinder, and V8 gasoline vehicles under normal conditions. Cold-weather diesel performance data is thinner — confirmed at normal temperatures, but sub-zero diesel starting data is limited in available community evidence.
From the manufacturer
Marketing copy from NOCO, via Amazon. Not editorial.
- •START DEAD BATTERIES — Instantly start dead batteries with 2000 amps of peak lithium power. Up to 40 starts per charge on engines up to 8.0L gas and 6.0L diesel.
- •ULTRASAFE TECHNOLOGY — Engineered with patented spark-proof and reverse polarity protection for foolproof connections to any 12V vehicle - no sparks, no wrong connections.
- •PORTABLE POWER BANK — Integrated power bank delivers emergency power to smartphones, tablets, and more. Recharges in 6 hours so it’s ready when it matters most.
- •INTEGRATED LED FLASHLIGHT — Precision-engineered 400-lumen LED with 7 light modes, including SOS and strobe. Illuminate repairs, emergencies, or low-light environments.
- •COMPACT YET POWERFUL — High-discharge lithium technology delivers exceptional starting performance in a compact 5.0 lb form factor - perfectly sized for glove boxes and emergency kits.
- •BUILT TOUGH — Rugged IP65-rated housing with rubberized over-molding protects against water, dust, and impact. Includes high-conductivity clamps for maximum energy transfer.
- •WHAT’S IN THE BOX — GB70 jump starter, heavy-duty clamps, USB-C charging cable, and microfiber storage bag. Backed by a 1-year warranty and engineered in the USA.
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Manufacturer videos
Manufacturer images
Manufacturer specifications
- Brand
- NOCO
- Battery Cell Composition
- Lithium Ion
- Voltage
- 12 Volts
- Product Dimensions
- 7.4"D x 3.7"W x 12.6"H
- Vehicle Service Type
- ATV, Motorcycle, Passenger Car, RV, Tractor, Truck, UTV, Van, Watercraft
- Battery Type
- Lithium Ion
- Compatible with Vehicle Type
- ATV, Motorcycle, Passenger Car, RV, Tractor, Truck, UTV, Van, Watercraft
- Battery Capacity
- 5000 Milliamp Hours
- Amperage
- 2000 Amps
- Peak Output Current
- 2000 Amps
- Automotive Fit Type
- Universal Fit
- Item Dimensions D x W x H
- 7.4"D x 3.7"W x 12.6"H
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Top Amazon review
↗External — Amazon's most-helpful review for context.
Reliable, powerful jump starter that actually holds a charge
As a mechanic, I’ve used a lot of jump starters and portable battery boosters. Most cheaper ones work at first, but fail when you actually need them.I’ve had the NOCO Boost GB70 2000A lithium jump starter since 2018, and it’s been extremely reliable.✅ Strong starting powerI mainly use this on power hungry luxury vehicles with high CCA batteries and large V8 engines, and it has no problem firing them up. It delivers consistent power and doesn’t struggle like lower-end units.✅ Holds a charge for monthsThis is the biggest reason I recommend it. I keep it in my truck year-round in Texas heat, and it will still jump start a car after sitting 6–12+ months. I’ve only charged it a handful of times, and never because it was too low to work.✅ Easy and safe to useReverse polarity protection and spark-proof clamps make it simple. You don’t have to second guess anything. Clamp it, power it on, and go.✅ Portable and compactSmall enough to keep in your truck without taking up space, but powerful enough to handle real situations. Easy to grab and use when needed.✅ VersatileWorks as a jump starter, battery booster, and also has USB ports for charging devices in an emergency. No built-in air compressor, but I’d rather have reliability than extra features.✅ Cable lengthThe clamps and cables are long enough to work comfortably without fighting for reach, which makes a difference when you’re in a tight spot.✅ Solid build qualityFeels durable and well-made. Not cheap or flimsy like a lot of other portable jump starters.⚠️ Minor downsideCharging speed is a bit slow, but that’s not a dealbreaker for something meant for emergencies.Bottom line:If you want a reliable jump starter, battery booster, or portable car jump starter that actually works when you need it, the NOCO GB70 is worth it. I’ll take reliability over extra features every time.